<template>
  <div class="login_container">
  <div class="login_box">
    <div class="avatar_box">
      <img src="@/assets/lala.jpg" alt="">
    </div>

    <!-- 登录表单区域 -->
  <el-form label-width="0px" ref="LoginFormRef" :rules="loginFormRules" class="login_form" :model="loginForm">
    <!-- 用户名 -->
  <el-form-item prop="username">
    <el-input prefix-icon="iconfont icon-user" v-model="loginForm.username"></el-input>
  </el-form-item>
  <!-- 密码 -->
  <el-form-item prop="password">
    <el-input prefix-icon="iconfont icon-3702mima" type="password" v-model="loginForm.password"></el-input>
  </el-form-item>
  <!-- 按钮区域 -->
  <el-form-item class="btns">
  <el-button type="primary" @click="login">登录</el-button>
  <el-button type="info" @click="resetLoginForm">重置</el-button>
  </el-form-item>

  </el-form>
  </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      /* 登陆表单的数据绑定对象 */
      loginForm: {
        username: '',
        password: ''
      },
      /* 表单的验证规则 */
      loginFormRules: {
        /* 验证用户名是否合法 */
        username: [
          { required: true, message: '请输入登录名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        /* 验证密码是否合法 */
        password: [
          { required: true, message: '请输入登录密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    resetLoginForm () {
      this.$refs.LoginFormRef.resetFields()
    },
    login () {
      this.$refs.LoginFormRef.validate(async valid => {
        // console.log(valid)
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        // console.log(res)
        if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
        this.$message.success(res.meta.msg)
        /* 1,将登陆成功之后的token 保存到客户端的sessionStorage */
        window.localStorage.setItem('token', res.data.token)
        /* 通过编程式导航跳转到后台主页，路由地址是 /home */
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container{
  height: 100vh;
  background-color:#2b4b6b;
  .login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    .avatar_box {
      height: 130px;
      width: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      position: absolute;
      left: 50%;
      transform: translate(-50% ,-50%);
      background-color: #fff;
      img{
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color:#eee ;
      }
    }
  }
}
.btns{
  display: flex;
  justify-content:flex-end ;
}
.login_form{
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
</style>
